The Use of Silane Coupling Agents on Lithium Disilicate Glass Ceramic Repaired with Resin Composite

摘要

This study examined the effects of silane coupling agents on lithium disilicate glass ceramic/resin composite shear bond strength. Two silane coupling agents (RelyX ceramic primer, RX and Kerr silane, KS) and adhesive (Single bond2, SB) were used. Lithium disilicate disks were prepared and embedded in dental gypsum. The samples were randomly divided into six groups (n = 10) according to surface treatments: group1 (No tx), group2 (RX), group3 (SB), group4 (KS), group5 (RX+KS) and group6 (RX+SB). Silicone mold was placed on top of treated ceramic surface. Resin composite was filled into mold and then light-cured for 40 seconds. All bonded specimens were kept in distilled water at 37oC for 24 hours and they were subjected to bond strength measurement using a universal testing machine. The data were statistically analyzed using oneway ANOVA and Tukey’s test. The bond strengths of group1 to group6 were 5.13(2.38), 16.36(3.54), 11.14(1.67), 10.49(2.85), 20.84(3.02) and 22.25(2.51) MPa, respectively. Group5 and group6 showed significantly highest bond strength value (P < 0.05). Group2 exhibited significantly higher bond strength values than group3 and group4 (P < 0.05). In conclusion, the any type of silane had positive effect on lithium disilicate and resin composite interface. Silane application prior to the adhesive material increased bond strength.